yum install libffi-devel -y
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz && tar -zxf Python-3.7.0.tgz && cd Python-3.7.0
./configure --prefix=/usr/python
make && make install
mv /usr/bin/python /usr/bin/python.bak
ln -s /usr/python/bin/python3 /usr/bin/python3
mv /usr/bin/python.bak /usr/bin/python原文：http://blog.51cto.com/keefe/2137416